如何在Android中动态设置布局参数？ [英] How to dynamically set layout parameters in Android?

问题描述

我有这些我动态生成的文本字段。但我似乎无法为他们设置布局参数。请告诉我我在做错什么。

我可以生成没有布局参数的字段。但是，如果我使用 LayoutParams ，它甚至不会生成。

代码：

  TableLayout table =（TableLayout）findViewById .id.TableLayout1）; 
 
 TableRow tr = new TableRow（this）; 
 LinearLayout.LayoutParams trparams = new LinearLayout.LayoutParams（LinearLayout.LayoutParams.MATCH_PARENT，LinearLayout.LayoutParams.WRAP_CONTENT）; 
 tr.setLayoutParams（trparams）; 
 
 cg [i] = new EditText（this）; 
 weight [i] = new EditText（this）; 
 cg [i] .setInputType（InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_DECIMAL）; 
 weight [i] .setInputType（InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_DECIMAL）; 
 
 //这里出错了。通过添加fieldparams，文本字段甚至不生成。 
 LinearLayout.LayoutParams fieldparams = new LinearLayout.LayoutParams（10，LinearLayout.LayoutParams.WRAP_CONTENT，1.0f）; 
 tr.addView（cg [i]，fieldparams）; 
 tr.addView（weight [i]，fieldparams）; 
 
 table.addView（tr）; 
  

解决方案

您正在将表行添加到表中，因此使用 TableLayout.LayoutParams 而不是 LinearLayout.LayoutParams 。因为我们使用LayoutParam根据我们要添加的父项

I have these text fields which I generated dynamically. But I can't seem to set layout parameters for them. Please tell me what I'm doing wrong.

I'm able to generate the fields without layout parameters. However, If I use LayoutParams, it doesn't even get generated.

Code:

TableLayout table = (TableLayout) findViewById(R.id.TableLayout1);

TableRow tr = new TableRow(this);
LinearLayout.LayoutParams trparams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
tr.setLayoutParams(trparams);

cg[i] = new EditText(this);
weight[i] = new EditText(this);
cg[i].setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_DECIMAL);
weight[i].setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_DECIMAL);

//Here's where it goes wrong. By adding fieldparams, the text field doesn't even get generated.
LinearLayout.LayoutParams fieldparams = new LinearLayout.LayoutParams(10, LinearLayout.LayoutParams.WRAP_CONTENT, 1.0f);
tr.addView(cg[i], fieldparams);
tr.addView(weight[i], fieldparams);

table.addView(tr);

解决方案

You are adding Table Row into table so use TableLayout.LayoutParams instead of LinearLayout.LayoutParams.As we use LayoutParam according to parent in which we are going to add

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